Ma, Hsuan-Hsiao Chou, Te-Feng Tsai, Shang-Wen Chen, Cheng-Fong Wu, Po-Kuei Chen, Wei-Ming MOESM9 of The efficacy and safety of continuous versus single-injection popliteal sciatic nerve block in outpatient foot and ankle surgery: a systematic review and meta-analysis Additional file 9: Figure S9. Funnel plot of total amount of oral analgesics at 72 h. Complication;Continuous popliteal sciatic nerve block;Foot and ankle surgery;Outpatient surgery;Pain management 2019-10-11
    https://springernature.figshare.com/articles/figure/MOESM9_of_The_efficacy_and_safety_of_continuous_versus_single-injection_popliteal_sciatic_nerve_block_in_outpatient_foot_and_ankle_surgery_a_systematic_review_and_meta-analysis/9969419
10.6084/m9.figshare.9969419.v1